I've looked over the add-on release of Revolution! and found some changes. Demos added. Original WAD had none. TITLEPIC, CREDITS, INTERPIC, and BOSSBACK graphics redone. Originals on top (including CREDITS from the Revolution! MIDI Pack for additional comparison), Bethesdas on bottom: New HELP graphic that has no original equivalent.

  Map edits:
MAP01
- One secret removed. The green armor secret in the original could not be tagged because the player can't actually stand within the sector marked as a secret. In the Bethesda version, this sector is no longer marked as a secret, hence it's possible to acquire all secrets now.

MAP21
- New secret room added that contains one health bonus. The floor initially says 2001 and then changes to 2021 when approached.
MAP22
- New Berserk secret added to starting structure. Original on top, Bethesda on bottom: - Two health bonuses added on the small teleporters that lead to and from the starting structure.

MAP30
- One secret added. Southwest pillar of the opening teleporter can be lowered to reveal an armor bonus. Original on top, Bethesda on bottom:     This release includes the content from the Revolution! MIDI Pack merged in, but it has some changes as well. Notably does not include the modified CWILV22 graphic which corrects the spelling of "Pyramide" to "Pyramid". However, this spelling correction was performed in the new DMAPINFO lump, so it's at least right in the automap. Title screen, intermission screen, MAP04, and MAP12 music tracks completely replaced. MAP03 music track updated. It's the same composition, but has slightly altered instrumentation/volume? Wording in the text screens has been altered. All references to the demons becoming slaves have been removed. Original wording on left, Bethesda wording on right:
- SLAVES => MINDLESS WORKERS
- SLAVE-WORKERS => CHEAP LABOR
- BE ENSLAVED => FOLLOW
  A few other trivial grammar changes in the text:
- A DEVICE BUILD BY THE ANCIENT GOD => A DEVICE BUILT BY THE ANCIENT GOD
- YOU ARE DRAGGED INTO THE REALM OF CHAOS. => YOU ARE DRAGGED INTO THE REALM OF CHAOS!
- WITHOUT CHAOS THERE WILL BE HARMONY. => WITHOUT CHAOS, THERE WILL BE HARMONY.
  Custom text screens leading to the secret levels have been omitted, although they didn't have much unique to say. The original Doom 2 secret level text is used now.
  MAP33 edit
- Exit modified. The original version had a working exit switch in front of a swastika, but pressing this would crash the game when the next level tried to load. The new version has a fake door with a teleporter line in front of it that forces you to telefrag a voodoo doll, making it impossible to exit the level. Original on top, Bethesda on bottom:  
Additional trivia: The WAD is internally designated as "14", which chronologically places it before Arrival (15) and Anomaly Report (16) despite being released after. This suggests the add-on was in limbo for a while, maybe a whole year given the secret "2021" message.
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